Grief Update - Engine Rebuild

Grief Update - Engine Rebuild

Author
Discussion

MikeE

1,651 posts

248 months

Wednesday 26th February 2020
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Boosted LS1 said:
^ That would be really good and I'd do your pair at cost :-)

^^ I could leave a 'thick' spot to allow for AN fittings.
Any further thoughts on producing these? I’d like a set subject to cost of course

Boosted LS1

19,695 posts

224 months

Wednesday 26th February 2020
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^ I cast all sorts of things but would need to have a sample to look at.

Have just finished my cosworth v6 24v itb's :-) So can get onto a new project anytime.

Classic Chim

10,894 posts

113 months

Wednesday 26th February 2020
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I’ve hidden mine so well I can’t find it. I’ve got stuff allover the place so when my memory comes back I might remember what nooky hole it put it in frown


ChimpOnGas

9,637 posts

143 months

Friday 28th February 2020
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Matthew Poxon said:
I thought the same so Ged Sant kindly made me up a couple of AN-12 fittings that screw into the original rockers.



I would be interested in either a standard pair of the TVR rockers as a spare or a modified version, taller and with AN connections.
Assuming they're not silly money I'd also be interested in a set of repro TVR rocker covers, making them taller and AN fitting ready would definitely be the way to go.

spitfire4v8

3,531 posts

145 months

Friday 28th February 2020
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http://jrcast.com/?page_id=221

this guy already does custom rocker covers for a range of engines including the RV8 .. might be worth a call ?

phazed

19,552 posts

168 months

Friday 28th February 2020
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spitfire4v8 said:
http://jrcast.com/?page_id=221

this guy already does custom rocker covers for a range of engines including the RV8 .. might be worth a call ?
Good call but check that the covers have the lip to locate the rubber gaskets.

I had a pair made up a few years ago, great quality and cheap but the base was machined flat which makes it really difficult to make a good seal. Designed for the old cork gaske iirc.

Richieboy3008

965 posts

147 months

Wednesday 20th May 2020
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Finished yet?

Matthew Poxon

Original Poster:

5,283 posts

137 months

Sunday 7th June 2020
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Richieboy3008 said:
Finished yet?
Not yet, engine is with Jody at Python Racing for installation in the car. Next the fun of trying to relocate all the ancillaries and add an electronic water pump and oil catch tank.

Matthew Poxon

Original Poster:

5,283 posts

137 months

Monday 20th July 2020
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Exhaust manifolds are back from Zircotec.

I opted for the graphite finish from their performance colours range. I was very tempted by the white but I knew it would be nightmare to keep clean.

The coating is suitable for applications up to 900 degrees Celsius. Since I am not running an airbox due to the ITBs it is important to manage the under bonnet temperatures, the Zircotec coating reduces the maniflold surface temperature by 33% and under bonnet temperatures by up to 50 degrees.

I asked Zircotec to take photos throughout the process, unfortunately none were able to be taken during the plasma coating process so but Zircotec kindly supplied a stock image.

Preparation
Any holes and areas that do not need to coated are blanked off or plugged, eg internal slip joints and flanges. To prepare the exposed areas for the coating the manifolds were subject to a two stage cleaning process. To remove any surface contamination manifolds were first cleaned using a heavy duty detergent and then sandblasted.

Bond coat
Before the ceramic coat can be applied a metallic-based bond coat is sprayed onto the surface. The bond coat ensures the outer ceramic substance properly adheres to the surface.

Ceramic coat
The ceramic coating is applied with a plasma jet onto the bond layer. A torch fires the zirconia ceramics at the surface at high speed. Like welding, an inert gas is used to stabilise the area being worked on, argon shields the are the ceramics are being fired at the surface from oxygen.

Performance Colour
The performance colour is applied after the base white ceramic coating














dhutch

8,170 posts

161 months

Monday 20th July 2020
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Looks absolutely fantastic.

TR4man

4,152 posts

138 months

Monday 20th July 2020
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dhutch said:
Looks absolutely fantastic.
Bet it sounds fantastic too!

mk1fan

9,894 posts

189 months

Thursday 23rd July 2020
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Hhmm equal length manifolds.

griffdude

1,683 posts

212 months

Thursday 23rd July 2020
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I just left mine in the bare stainless, they’ve gone a nice colour over the years.

Richieboy3008

965 posts

147 months

Wednesday 29th July 2020
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+1 for the almighty interesting pictures!

urquattroGus

1,458 posts

154 months

Wednesday 29th July 2020
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Matthew the Griffith Fetishist biggrin

Looking Good as ever.

QBee

18,084 posts

108 months

Wednesday 29th July 2020
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urquattroGus said:
Matthew the Griffith Fetishist biggrin

Looking Good as ever.
.....as does the car. getmecoat

Matthew Poxon

Original Poster:

5,283 posts

137 months

Sunday 9th August 2020
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An issue that has been on the list for a while to resolve is the fact that the rocker covers do not fit over the Yella Terra roller rockers. The TVR cast rocker covers are taller than the OEM Rover versions which will clear the Yella Terra YT6000s but unfortunately they will not clear the YT6305 fully cradled system I have fitted.

The solutions I considered were:

- Modify the TVR cast rocker covers to suit
- Aftermarket rocker covers
- Valve cover spacers

The area which the rocker covers were fouling was the cut out for the original carburettor which TVR had replicated on the TVR cast versions. I had very recently paid to have the rocker covers powder coated and the ribs machined off so I was not keen on modifying to suit as this would require cutting and welding, then refinishing.

There are a variety of aftermarket options available, Dom at Power had a very nice pair in stock which we test fitted. There was also the option to have a custom pair made so for example I could opt for the text 5.3 V8 with a TVR logo.





I wanted to retain the period TVR Tuscan Challenge 4.5 Rover V8 look so I opted for the valve cover spacers.

After completing some research some owners reported reliability issues with oil leaks whereas some were fine. After some further research outside of the the TVR world I found a company in the US called Medice that produce billiet valve cover spacers for the Buick 215 (same rocker pattern as Rover V8). The Medice spacers are billet aluminium and feature a relief cut that allows the gasket material to become imbedded into the spacer providing a tighter grip of the gasket against the spacer surface.

https://medicemfg.com/




andy43

7,261 posts

218 months

Sunday 9th August 2020
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Looks awesome smile

phazed

19,552 posts

168 months

Sunday 9th August 2020
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A good decision and a nice find with those American spacers Matthew.

Before Simon sourced me a taller pair of covers I utilise the spacers that were available over here in the UK. These didn't have the recess as yours has and even though mine didn't leak I had to be super careful on assembly.

Are there any other obstacles to be overcome? When is your anticipated completion time?

To be honest, you don't need the car in this hot weather, far too hot for a TVR.....

Matthew Poxon

Original Poster:

5,283 posts

137 months

Sunday 9th August 2020
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The engine and car are with Jody for installation. Before the engine is installed we decided to take the opportunity to tidy up the engine bay. The car had a new chassis from RT racing fitted 2009, the chassis has been regularly inspected every since and Wazoyl applied at the annual service. The removal of the old engine revealed areas where paint had flaked off and areas of light surface rust.



The heat shields were removed and and given to a local company to fabricate new ones using the old ones as templates. The result is fantastic and a higher quality finish compared to the originals, especially the stitching.





Regarding the chassis I didn't want to fall into the trap of repainting the whole chassis with the body in situ, not being happy with the finish and end taking the body off and delaying the project further. After speaking to Jody we agreed that repainting just the top rails would be a suitable compromise as the immediately viable part of the chassis around the new engine will be freshened up from an aesthetic point of view and the area where the engine sits is protected.

The top rails now have 3 coats of POR15 and the engine is ready to be installed once the heat shields are refitted.